Different member operators

[lucaswerkmeister]

How do we represent the different member operators ., ?., *.? Probably through a child of QualifiedExpression, but I need to check if we use QualifiedExpression anywhere where only the regular member operator is allowed.

[lucaswerkmeister]

The alternative would be:

• AnyQualifiedExpression
  • QualifiedExpression
  • SafeQualifiedExpression
  • SpreadQualifiedExpression

(names may change)

If it turns out that we do use QualifiedExpression in places where other member operators aren’t allowed, we’ll probably have to use this variant instead.

[lucaswerkmeister]

Okay, so it seems we’re not using QualifiedExpression anywhere else. In that case, the remaining question is just the names of the additional child.

The RedHat AST has:

• MemberOperator
  • MemberOp
  • SafeMemberOp
  • SpreadOp

However, we don’t really use abbreviations elsewhere in ceylon.ast (our operator expressions are called XOperation instead of XOp) – perhaps with the exception of LIdentifier, UIdentifier – so we should find a better naming scheme.

[lucaswerkmeister]

I think it’s best to stick to the compiler’s design and just have a child of QualifiedExpression.

Naming suggestion:

• AnyMemberOperator
  • MemberOperator
  • SafeMemberOperator
  • SpreadMemberOperator